File:A Velocipedes Or 'Car Gwyllt' - Geograph.org.uk - 296728.jpg
Fatal accidents were not unknown and the management introduced a regulation banning cars from travelling closer than 25 yards to the next vehicle. Dinorwig Quarry document 1563 shows that on
23 July 1894 Robert Williams (Victoria)was punished for running his Velocipedes within 10 yds of the one in front causing an accident. He was suspended without pay from the quarry for 3 days.
(required by the license)